公开(公告)号：US20240051291A1

公开(公告)日：2024-02-15

申请号：US18114151

申请日：2023-02-24

Applicant: Samsung Display Co., LTD.

Inventor： Satoshi TOMOEDA ,  Setsu TAKEUCHI

IPC: B41J2/045

CPC classification number: B41J2/0456 ,  B41J2/04586

Abstract: A printing device includes: a printer, which to include a plurality of nozzles; a discharge detection sensor configured to detect an amount of ink discharged from the plurality of the nozzles; and a nozzle combination calculator configured to determine a final nozzle combination for each pixel column on a substrate based on discharge rates of the plurality of the nozzles, where the nozzle combination calculator includes: an average value calculator configured to set a usable nozzle group for each pixel column of the substrate among the plurality of the nozzles; and a nozzle combination determiner configured to determine the final nozzle combination corresponding to each pixel column by using a moving average value of nozzle discharge rates of the nozzle group set for each pixel column.

公开(公告)号：US20230382104A1

公开(公告)日：2023-11-30

申请号：US18110431

申请日：2023-02-16

Applicant: Samsung Display Co., LTD.

Inventor： JEYUN RYU ,  Jae Seok PARK ,  Satoshi TOMOEDA

IPC: B41J2/045

CPC classification number: B41J2/04508 ,  B41J2/04586

Abstract: An inkjet printing apparatus includes: an inkjet head including nozzles that discharge an ink; and a controller that controls to discharge the ink by the nozzles. The controller includes: a nozzle coordinate analyzer that analyzes coordinates of the nozzles based on a substrate; a nozzle selection probability grantor that assigns a nozzle selection probability the nozzles that how likely the nozzles are selected to discharge the ink; and an ink discharge determinator that determines whether to discharge the ink or not based on the nozzle selection probability.